Granted Patent
Utility
US 5,856,544 · App. 08/834,633
Aminopolysiloxanes with hindered 4-amino-3,3-dimethylbutyl groups
Inventors:
Anna Czech, Gerald J. Murphy, Curtis L. Schilling, Jr.
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Apr 14, 1997
Inventors
Anna Czech
Gerald J. Murphy
Curtis L. Schilling, Jr.
Assignee (at issue)
OSI Specialties, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.